Fire-extinguisher composition.



It will, of course, be understood that the,

precise proportions given above by Way of example may be departed from when desired, these proportions being intended rather to indicate the marked effect of the alkali metal lactate in depressing the freezing point. The composition is employed in practice by reaction with a suitable acid as, for example, hydrochloric acid or sulfuric acid in a fire extinguisher, whereby carbon dioxid is generated and expels bylts pressure, the

contents of the extinguisher.

l claim:

1. A carbonate solution for tire extinguishers, comprising as essential ingredients, a potassium salt of carbonio acid and an alkali metal lactate. Y

2. A carbonate solution for lire eXtinguishers, comprising as essential ingredients,

guishers, comprising as essential ingredients,

potassium carbonate and sodium lactate, substantlally in proportions oi" 4.54 grains of potassium carbonate and (36 grams of @odiuln lactate 1n 100 cubic (.e'ntnneters ot Water.

HARRY S. MQRK. 

